Vietcombank sold the greenback at VND26,285, up 0.1% from Thursday. On the black market, the currency dropped 0.23% to around VND25,810.
The State Bank of Vietnam reduced its reference rate by 0.04% to VND25,605.
Globally Asian shares rose on Friday as investors embraced a global rally before crucial U.S. jobs data, while bonds found some much needed relief after a top Federal Reserve official cooled rate hike fears and dragged the dollar lower, Reuters reported.
The dollar drew scant support from higher yields and was fetching 98.96 against its major peers, after skidding 0.6% overnight. It is set for a weekly drop of 0.7%.
The dollar's retreat turbocharged a rally in the yen, which has gained 2.6% this week to trade at 155.7 a dollar, putting it within striking distance of the 155.2 level.
Attention now shifts back to key data releases ahead of the FOMC meeting on September 15-16, including nonfarm payrolls later and CPI inflation next week.
Markets now imply a 75% chance of a September move, while a hike by October is fully priced in, raising the prospect of either a larger increase or back-to-back tightening.
"While we can't rule out another round of price checks, or intervention, it could also be pre-positioning — official or speculative — in expectation of a soft non-farm payrolls tonight and a potentially hawkish BOJ meeting in a fortnight," said Tony Sycamore, analyst at IG.